MC 1
What is a disturbance that moves energy from place to place is called ___________-
wave
the loudness or softness of a sound that distinguishes it from other sounds is called ______-
What is a type of echolocation that locates items underwater?
sonar
True or False: Timbre is how high or low a sound is
false
objects that vibrate quickly have a ___________ pitch
high
A vibration that can be heard is called ___________?
sound
The quality of a sound that distinguishes it from other sounds is called ________
timbre
The echoes of high-frequency sound waves to "see" inside a human body
Ultrasound
True or false: Musical instruments that are played at the same pitch and volume still sound different because of their timbre.
True
Smooth, hard surfaces usually _________ sound
reflect
The part of a sound wave where the motion of each vibration pushes together some of the particles of matter is called ____________
A compression
Most sound we hear travel through
air
True or False: Sound moves through matter in waves.
True
A sound wave carries particles of matter with it.
False
Rough, fuzzy surfaces usually _________ sound
absorb
A sound wave that bounces back toward its source and is heard again is ___________
echo
The intensity of a sound is measured in
decibels
True or False: Most of the sounds we hear are a blend of several waves
true
Most sound waves gradually get louder as their energy is used up.
False
Sound waves that travel through the matter are described as _____________waves.
mechanical.
The pitch of a sound is related to its
frequency
What is the science of sound?
Acoustics
A machine that changes sound waves into electrical pictures seen on a graph
Oscilloscope
Sound waves travel in all directions from the source of the sound
true
Both singing and speaking are caused by vibrations of the vocal cords inside the _________________.